ive got 2 cnrom carts that give runable roms but the chr only works at the 8000 size. The carts should only need 4000, but any time i change the ppu size kazzo reports the data is all 0xFF's. Id like to get get clean matching roms according to the bootgod database.Anybody have any idea what is wrong?

Ive tried 0,1,2,3 for those diode bits when writing to 0x8000, but the same random noise appears. Its usually the most significant bit.So a clean rom might have 0x00 and ill get 0x80. The PRG is always good so the game runs, but ill get pixel glitches in the chr images.Can anyone confirm that diode layout number? Since they alternate i expects it either 1 or 2. But since neither changes the output i dont know what im missing.Pins 51 and 51 do look exposed on the trace slighty, but theres no burnt marks and they look ok. If i had a trace issue id expect it always wrong giving vertical stripes (ive seen that with one cart before and fixed it)

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